When I was in primary school, payphones cost about 20 cents per local call. So kids would say to eachother "here's 20 cents, go call someone who cares". Eventually the call cost went to 30c so it became "here's 30 cents, go call someone who cares". Then in high school there were phone cards, so it was "here's a phone card, go call someone who cares". In university it became "go email someone who cares", then "go text someone who cares". And now we're really in the future because there are insults involving cloning.